Leighton of Arabia and The Case of The Missing Beach

Heading away from Saigon we made for the beaches of Mui Ne.  Only problem was there weren't any beaches in this beach town. That us, unless we paid triple the price for a hotel on the beach. Bummed to the max we moped around the first day in the sun. At least our hotel was nice. The manager seemed very interested in us in an uncomfortable way. He kept offering us free massages. No Thanks, Buddy!!!
We did hire bikes on day 2 and ride out to the sand dunes. Mui Ne is called the "Sahara of Asia" because that's basically what it looks like. Vast seas of red sand stretch for kilometers and form pretty impressive dunes. Little children who should have been in school begged us to rent their vinyl sleds but the dunes just weren't steep enough (the price for a sled sure was though). The Red Dunes were just 5-6km from our hotel... but the White Dunes were a bit further: 25km further. So of course we rode to them! How could we resist? It was a stunningly sunny day and the coastal road crept through the seaside hills in languid fashion. Or so it seemed until we had covered half the distance and faced our third hill of epic proportions! Thank God I had "the good bike" because I was struggling! Not Leighton though, he pedaled on like a beast. He really pushed me to keep going and fight through the pain in my quads. We made it to the White Dunes, took some photos, and turned around. Another 45km back to the hotel. In the full midday sun.
We stopped at a little cafe where the locals were partaking in rowdy card games and noon-time iced coffees. We guzzled Pepsi's and some isotonic drinks for lunch since food was not on the menu. When we got back to the hotel we both collapsed into bed after adamantly refusing massages from the manager (who was dusky impressed that we rode all the way out and back). For the North Americans, 70 kilometers is about 43.75 miles. Call it 44!
The next day we vamoused from the beachless beach town and headed for Dalat up in the mountains. Only problem was we forgot to get our passports back from Mr. Creepy Massage. Didn't realize til we had been on the bus for an hour. 
Would Mike and Leighton ever see their passports again?
Would Mr. Creepy Massage find another pair of foreigners to scare?
Find out in the next episode of Leighton of Arabia!